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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
28/10/2008 |
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Data da última atualização: |
07/12/2023 |
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Autoria: |
SIMAO NETO, M.; JONES, R. M.; RATCLIFF, D. |
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Título: |
Recovery of pasture seed ingested by ruminants. 1. Seed of six tropical pasture species def to cattle, sheep and goats. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Australian Journal of Experimental Agriculture, v. 27, n. 2, p. 239-246, 1987. |
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DOI: |
https://doi.org/10.1071/EA9870239 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract; This study examined the effects of different species of ruminants and pasture plants on the passage of ingested seed. Penned cattle, sheep and goats were fed a basal diet of 80% lucerne hay and 20% milled wheat. After 14 days on the basal diet a mixture of known numbers of pasture seeds (Brachiaria decumbens, Axonopus afinis, Neonotonia wightii cv. Tinaroo, Trgfolium semipilosum cv. Safari, Stylosanthes hamata cv. Verano and S. scabra cv. Seca) was fed on 1 day. Faeces were collected for 6 days after feeding the seed while animals remained on the basal diet. Seed samples of each species were tested for germination and hardseededness (or dormancy) both prior to feeding and on seed washed from a subsample of the faeces. Other subsamples were kept moist and emerging seedlings were removed over a 104 week period. Cattle digested less seed than did sheep and goats, but the germination characteristics of the recovered seed were similar for the different animals. The mean recovery of viable seeds ingested was 42, 10 and 19% for cattle, sheep and goats, and 39, 39, 23, 21, 12 and 8% for Safari, Tinaroo, Seca, Axonopus, Brachiaria and Verano. Most of the seeds excreted were recovered on the second and third days following feeding. For sheep and goats, the percentage recovery of ingested legume seed as emerging seedlings was similar to recovery calculated from washing out seed followed by germination testing. However, there was a lower recovery, as seedlings, for the seeds ingested by cattle. This was partially due to the larger number of hard seeds remaining in cattle faeces after the 104 week germination period. MenosAbstract; This study examined the effects of different species of ruminants and pasture plants on the passage of ingested seed. Penned cattle, sheep and goats were fed a basal diet of 80% lucerne hay and 20% milled wheat. After 14 days on the basal diet a mixture of known numbers of pasture seeds (Brachiaria decumbens, Axonopus afinis, Neonotonia wightii cv. Tinaroo, Trgfolium semipilosum cv. Safari, Stylosanthes hamata cv. Verano and S. scabra cv. Seca) was fed on 1 day. Faeces were collected for 6 days after feeding the seed while animals remained on the basal diet. Seed samples of each species were tested for germination and hardseededness (or dormancy) both prior to feeding and on seed washed from a subsample of the faeces. Other subsamples were kept moist and emerging seedlings were removed over a 104 week period. Cattle digested less seed than did sheep and goats, but the germination characteristics of the recovered seed were similar for the different animals. The mean recovery of viable seeds ingested was 42, 10 and 19% for cattle, sheep and goats, and 39, 39, 23, 21, 12 and 8% for Safari, Tinaroo, Seca, Axonopus, Brachiaria and Verano. Most of the seeds excreted were recovered on the second and third days following feeding. For sheep and goats, the percentage recovery of ingested legume seed as emerging seedlings was similar to recovery calculated from washing out seed followed by germination testing. However, there was a lower recovery, as seedlings, for the seeds i... Mostrar Tudo |
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Palavras-Chave: |
Feed crops; Recuperation. |
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Thesagro: |
Consumo; Nutrição Animal; Ruminante. |
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Thesaurus Nal: |
Animal feeders; Cattle; Goats; Grazing; Hay; Pasture plants; Ruminant nutrition; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02524naa a2200313 a 4500
001 1533982
005 2023-12-07
008 1987 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1071/EA9870239$2DOI
100 1 $aSIMAO NETO, M.
245 $aRecovery of pasture seed ingested by ruminants. 1. Seed of six tropical pasture species def to cattle, sheep and goats.
260 $c1987
520 $aAbstract; This study examined the effects of different species of ruminants and pasture plants on the passage of ingested seed. Penned cattle, sheep and goats were fed a basal diet of 80% lucerne hay and 20% milled wheat. After 14 days on the basal diet a mixture of known numbers of pasture seeds (Brachiaria decumbens, Axonopus afinis, Neonotonia wightii cv. Tinaroo, Trgfolium semipilosum cv. Safari, Stylosanthes hamata cv. Verano and S. scabra cv. Seca) was fed on 1 day. Faeces were collected for 6 days after feeding the seed while animals remained on the basal diet. Seed samples of each species were tested for germination and hardseededness (or dormancy) both prior to feeding and on seed washed from a subsample of the faeces. Other subsamples were kept moist and emerging seedlings were removed over a 104 week period. Cattle digested less seed than did sheep and goats, but the germination characteristics of the recovered seed were similar for the different animals. The mean recovery of viable seeds ingested was 42, 10 and 19% for cattle, sheep and goats, and 39, 39, 23, 21, 12 and 8% for Safari, Tinaroo, Seca, Axonopus, Brachiaria and Verano. Most of the seeds excreted were recovered on the second and third days following feeding. For sheep and goats, the percentage recovery of ingested legume seed as emerging seedlings was similar to recovery calculated from washing out seed followed by germination testing. However, there was a lower recovery, as seedlings, for the seeds ingested by cattle. This was partially due to the larger number of hard seeds remaining in cattle faeces after the 104 week germination period.
650 $aAnimal feeders
650 $aCattle
650 $aGoats
650 $aGrazing
650 $aHay
650 $aPasture plants
650 $aRuminant nutrition
650 $aSheep
650 $aConsumo
650 $aNutrição Animal
650 $aRuminante
653 $aFeed crops
653 $aRecuperation
700 1 $aJONES, R. M.
700 1 $aRATCLIFF, D.
773 $tAustralian Journal of Experimental Agriculture$gv. 27, n. 2, p. 239-246, 1987.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
25/02/2021 |
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Data da última atualização: |
14/05/2021 |
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Autoria: |
XAVIER, A. I. S.; ARBAGE, A. P.; SILVA, M. R. da; RIBAS, G. G.; MEUS, L. D.; SANTOS, G. A. de A. dos; STRECK, N. A.; ZANON, A. J. |
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Afiliação: |
ARTHUR INÁCIO SALDANHA XAVIEIR, Universidade Federal de Santa Maria; ALESSANDRO PORPORATTI ARBAGE, Universidade Federal de Santa Maria; MICHEL ROCHA da SILVA, Universidade Federal de Santa Maria; GIOVANA GHISLENI RIBAS, Universidade Federal de Santa Maria; LORENZO DALCIN MEUS, Universidade Federal de Santa Maria; GIONEI ALVES de ASSIS dos SANTOS, Instituto Rio Grandense do Arroz; NEREU AUGUSTO STRECK, Universidade Federal de Santa Maria; ALENCAR JUNIOR ZANON, Universidade Federal de Santa Maria. |
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Título: |
Economic and productive analysis of irrigated rice crops using a multicase study. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v. 56, e02037, 2021. |
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DOI: |
https://doi.org/10.1590/S1678-3921. pab2021.v56.02037 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Análise econômico-produtiva de lavouras de arroz irrigado por meio de um estudo multicasos. |
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Conteúdo: |
ABSTRACT - The objective of this work was to evaluate the relationship between grain yield and production costs of flood-irrigated rice (Oryza sativa) in the state of Rio Grande do Sul, Brazil, in order to determine the yield range that maximizes the profit of farmers. There are estimations pointing out that the yield range that maximizes the profit for farmers is about 75 and 85% of the yield potential; however, this still needs to be validated for irrigated rice in Brazil. To validate these values, a technical and economic monitoring was carried out for eight farmers of irrigated rice, whose production costs were measured and compared with the mean yield and the percentage of potential yield achieved. To determine the potential yield of each crop, SimulArroz, a process-based model developed for the simulation of rice growth and yield in the South of Brazil, was used. The grain yield achieved by the farmers ranged from 6.3 to 11.0 Mg ha-¹ (48 to 83% of the potential yield), costs ranged from R$4,197.00 ha-¹ t o R $6,227.00 ha-¹, and profit ranged from R$-52.00 ha-¹ to R$3,599.00 ha-¹. Farmers who reach between 69 and 83% of yield potential achieve the highest profitability. The investment planning based on the yield potential calculated by the SimulArroz model can be efficiently adopted for irrigated rice crops. RESUMO - O objetivo deste trabalho foi avaliar a relação entre a produtividade de grãos e os custos de produção de lavouras de arroz (Oryza sativa) irrigado por inundação, no estado do Rio Grande do Sul, Brasil, para determinar a faixa de produtividade que maximiza o lucro do produtor. Existem estimativas de que a faixa de produtividade que maximiza o lucro para os agricultores é de cerca de 75 a 85% do potencial de produtividade; porém, isso ainda precisa ser validado para a cultura do arroz irrigado no Brasil. Para validar esses valores, foi realizado um acompanhamento técnico-econômico para oito produtores de arroz irrigado, cujos custos de produção foram determinados e comparados com a produtividade média e a percentagem da produtividade potencial atingida. Para determinar o potencial produtivo de cada lavoura, utilizou-se o SimulArroz, um modelo, baseado em processos, desenvolvido para a simulação do crescimento e da produtividade de arroz no Sul do Brasil. As produtividades atingidas pelos produtores variaram de 6,3 a 11,0 Mg ha-¹ (48 a 83% do potencial de produtividade), os custos variaram de R$ 4.197,00 ha-¹ a R$ 6.227,00 ha-¹, e o lucro variou de R$ -52,00 ha-¹ a R$ 3.599,00 ha-¹. Produtores que atingem entre 69 e 83% do potencial produtivo alcançam maior lucratividade. O planejamento de investimento com base no potencial produtivo, calculado pelo modelo SimulArroz, pode ser adotado eficazmente nas lavouras de arroz irrigado. MenosABSTRACT - The objective of this work was to evaluate the relationship between grain yield and production costs of flood-irrigated rice (Oryza sativa) in the state of Rio Grande do Sul, Brazil, in order to determine the yield range that maximizes the profit of farmers. There are estimations pointing out that the yield range that maximizes the profit for farmers is about 75 and 85% of the yield potential; however, this still needs to be validated for irrigated rice in Brazil. To validate these values, a technical and economic monitoring was carried out for eight farmers of irrigated rice, whose production costs were measured and compared with the mean yield and the percentage of potential yield achieved. To determine the potential yield of each crop, SimulArroz, a process-based model developed for the simulation of rice growth and yield in the South of Brazil, was used. The grain yield achieved by the farmers ranged from 6.3 to 11.0 Mg ha-¹ (48 to 83% of the potential yield), costs ranged from R$4,197.00 ha-¹ t o R $6,227.00 ha-¹, and profit ranged from R$-52.00 ha-¹ to R$3,599.00 ha-¹. Farmers who reach between 69 and 83% of yield potential achieve the highest profitability. The investment planning based on the yield potential calculated by the SimulArroz model can be efficiently adopted for irrigated rice crops. RESUMO - O objetivo deste trabalho foi avaliar a relação entre a produtividade de grãos e os custos de produção de lavouras de arroz (Oryza sativa) irrigado por inu... Mostrar Tudo |
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Thesagro: |
Arroz Irrigado; Custo de Produção; Lucro; Oryza Sativa. |
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Thesaurus NAL: |
Farmers; Production costs; Profitability; Rice. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/221471/1/Economic-productive-analysis-2021.pdf
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Marc: |
LEADER 03858naa a2200325 a 4500
001 2130280
005 2021-05-14
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S1678-3921. pab2021.v56.02037$2DOI
100 1 $aXAVIER, A. I. S.
245 $aEconomic and productive analysis of irrigated rice crops using a multicase study.$h[electronic resource]
260 $c2021
500 $aTítulo em português: Análise econômico-produtiva de lavouras de arroz irrigado por meio de um estudo multicasos.
520 $aABSTRACT - The objective of this work was to evaluate the relationship between grain yield and production costs of flood-irrigated rice (Oryza sativa) in the state of Rio Grande do Sul, Brazil, in order to determine the yield range that maximizes the profit of farmers. There are estimations pointing out that the yield range that maximizes the profit for farmers is about 75 and 85% of the yield potential; however, this still needs to be validated for irrigated rice in Brazil. To validate these values, a technical and economic monitoring was carried out for eight farmers of irrigated rice, whose production costs were measured and compared with the mean yield and the percentage of potential yield achieved. To determine the potential yield of each crop, SimulArroz, a process-based model developed for the simulation of rice growth and yield in the South of Brazil, was used. The grain yield achieved by the farmers ranged from 6.3 to 11.0 Mg ha-¹ (48 to 83% of the potential yield), costs ranged from R$4,197.00 ha-¹ t o R $6,227.00 ha-¹, and profit ranged from R$-52.00 ha-¹ to R$3,599.00 ha-¹. Farmers who reach between 69 and 83% of yield potential achieve the highest profitability. The investment planning based on the yield potential calculated by the SimulArroz model can be efficiently adopted for irrigated rice crops. RESUMO - O objetivo deste trabalho foi avaliar a relação entre a produtividade de grãos e os custos de produção de lavouras de arroz (Oryza sativa) irrigado por inundação, no estado do Rio Grande do Sul, Brasil, para determinar a faixa de produtividade que maximiza o lucro do produtor. Existem estimativas de que a faixa de produtividade que maximiza o lucro para os agricultores é de cerca de 75 a 85% do potencial de produtividade; porém, isso ainda precisa ser validado para a cultura do arroz irrigado no Brasil. Para validar esses valores, foi realizado um acompanhamento técnico-econômico para oito produtores de arroz irrigado, cujos custos de produção foram determinados e comparados com a produtividade média e a percentagem da produtividade potencial atingida. Para determinar o potencial produtivo de cada lavoura, utilizou-se o SimulArroz, um modelo, baseado em processos, desenvolvido para a simulação do crescimento e da produtividade de arroz no Sul do Brasil. As produtividades atingidas pelos produtores variaram de 6,3 a 11,0 Mg ha-¹ (48 a 83% do potencial de produtividade), os custos variaram de R$ 4.197,00 ha-¹ a R$ 6.227,00 ha-¹, e o lucro variou de R$ -52,00 ha-¹ a R$ 3.599,00 ha-¹. Produtores que atingem entre 69 e 83% do potencial produtivo alcançam maior lucratividade. O planejamento de investimento com base no potencial produtivo, calculado pelo modelo SimulArroz, pode ser adotado eficazmente nas lavouras de arroz irrigado.
650 $aFarmers
650 $aProduction costs
650 $aProfitability
650 $aRice
650 $aArroz Irrigado
650 $aCusto de Produção
650 $aLucro
650 $aOryza Sativa
700 1 $aARBAGE, A. P.
700 1 $aSILVA, M. R. da
700 1 $aRIBAS, G. G.
700 1 $aMEUS, L. D.
700 1 $aSANTOS, G. A. de A. dos
700 1 $aSTRECK, N. A.
700 1 $aZANON, A. J.
773 $tPesquisa Agropecuária Brasileira$gv. 56, e02037, 2021.
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